Azazel appears four times in Leviticus 16, exclusively in the context of the Day of Atonement (Yom Kippur) ritual. The precise meaning is debated: it may be a place name (a remote wilderness), the name of a demonic entity, or a compound meaning "goat of departure" (ez azal — goat that goes away). In the ritual, one goat was sacrificed and one was sent into the wilderness "for Azazel."
The scapegoat ritual powerfully dramatizes the removal of sin from the covenant community. While one goat's blood atoned for sin (making it possible to stand before a holy God), the Azazel-goat visually demonstrated the complete removal of guilt — carried far away, never to return. This two-goat ritual previews the double-blessing of Christ's atonement: His blood cleanses our guilt and His resurrection removes the power of sin (Romans 4:25). Sin is not merely covered but expelled.